Teachings of morality are more effective in supporting social union than religious beliefs and worships. In this way, this strategy has been given in both fields of theoretical and practical teachings to support social union in small, large and even global scales. Islam has emphasized all unifying virtues such as piety, fighting against selfishness, equilibrium, scholarly and truthfully discourse, mutual respect, goodness of suspicion, endurance and toleration, faithfulness to a promise, and also avoidance vices such as prejudice, jealousy, cruelty, audacity, monopolization, discrimination, accusation, animosity.